[1] Centre for Health Economics, The University of Manchester, Oxford Road, Manchester
[2] Department of Emergency Medicine, Beaumont Hospital, Dublin
[3] Emergency Care Research Unit (ECRU), Beaumont Road, Beaumont
[4] Division of Population Health Sciences, Royal College of Surgeons in Ireland (RCSI), 123 St. Stephen's Green
[5] Paediatric Emergency Research Unit (PERU), National Children's Research Centre Dublin, Crumlin
[6] Deartment of Emergency Medicine, Cork University Hospital, Wilton, Cork